Printing press



May 29, 1923.

U. KAWASAKI PRINTING: PRESS Filed Nov.

FIE 2' FIGS Patented May 29, 1923.

UNITED s'i" refs T7 0Fricr U'r KIoHI KAWASAKI, 0F SANIFRAINCISCO, CALIFOR A.

TPRIINTING rn nss.

a Application filed November 17,'1e2i.-seriai no. 515,752.

T 0 all whomz't may concern: I

Be it known-that I, UTAKror i KA ASAKI,- a subject of the Emperorof Japan, residing at San Francisco, in the county of Francisco and State of California, have invented new and useful Improvements in Printing Presses, of which the followingis a specification.

The present invention relates to improvements in printing presses of the type wherein Y or move towards the type carrying elements,

due to the suction produced by such movement of said elements. The result is that the paper is often dislodged from the platen and fails to feed off properly, or in some manner, becomes deranged or ammed during .the printing operation and the continuous oper-' ation of the press is thereby interfered with. The objections above noted are particularly encountered in printing small pieces of paper such as envelopes, circulars, folders and the like, these small pieces being caused to drop from the platen into the mechanism or onto the floor. i

It is the primary object of my invention to provide simple and efficacious means for preventing the paper being printed from adhering to the type or chase carried elements or from having a tendency to be lifted and removed from'the platen during the printing operation. whereby a press may be operated without damaging the paper and without causing interruptions in a continuous printing operation.

Another object of the invention is to provide means of the character described which may be readily incorporated into and adapt-' ed for cooperation with the ordinary printing press of the character described'without necessitating any material changes in the construction of .the press and the partsabove referred to, and without requiring in any manner, a change in the mode of operation of the press.

The invention possesses other advantages and features some. of which, with the foregoing will be set forth at length in the following description where I shall outline in full that form of the invention which I have San to efwith the present invention.

tion with my invention.

selected for-illustration in the drawings ac-- companying and forming a part ofthe .pres- I entspecification. In, said-drawings I have. shown one form of the constructionzofmy v$ invention, but it is to be understood that I I I do not limit myself'to suchformvsince the invention as expressed in theclaims may be embodied'in a plurality of forms.

.Referring, to the drawings:

printing press. j

Fig. 2 represents a vertical sectional view I of the chase carrying structure particularly r illustrating one embodiment of my invention as it will appear when ready foroperation. Fig. 3 is a rear elevation of the'chase. carrying element constructed in accordance" Fig. 4 is a frontflelevation of thel chase carrying element, the chase and 'type' therein: showing the elements. arranged in accordance with the invention. I z j Fig. 5 is a-perspective 'viewof one'of the spacer blocks as usedinconne ction'with the Present invention. g Fig. 6, is a perspective view-.jof another type of spacer block as employed'in conneo-v .In carrying out my invention, I -propose to first eliminate thesuction tendency pro-1 duced by the movements of thelplaten and chasecarrying elements of a printing press.

I may accomplishlthis by forming aiseries 9 of openings inone of the two elements, pref-V erably the chase carrying element, since such I element in the majority of pressesis moved with rapidity towards an imperforate platen. The provision of perforations in the chasesupporting element and in the type spacer II I blocks and also ince'rtain constructions of 3 typebea'ring blocks, will to; a great measure eliminate the suction producing tendency, of

said element and will prevent the paper fromhaving a tendency to be moved towards or adhere toor dislodge from the platen. Preferably I overcome the suction tendency, or in other words. prevent the paper "from being deranged and being unintentionally: dis- Q lodged from the platen,.by'the injecting of a blast of compressed air thru openings or perforations in or on the chase carrying element, said blasts of air to encounter the paper at-various 'points and thereby overcome the tendency above noted, such as would dislodge or derange the paper. I

- I 65,] Fig. 1 representsa side elevation of the. chase carrying and platen elements of a j Referring to the drawings, the embodiment of my invention illustrated therein is incorporated the platen 1 and the chase carrying element 2, other parts of the printing press being omitted from the drawings. In

the type of presses with which the invention is illustrated the lements 1 and 2 are moved towards one another and meetat the dotted line X shown in Fig. 1, such movement being very rapidly effected. The paper as shown at 3 is supported in the customary manner upon the platen and the element 2 carries the chase at having the usual type 5 and type spacer 6 supported thereon. T he'chase supporting element 2 is made up principally of an imperforate plate, with the usual device, not shown, for holding the chase thereon. In my invention the plate 7 constituting the body of the device 2 is formed with a plurality of openings or perforations 8 extending therethru. The type spacer blocks 6 as used 'in connection with my invention are flikewise provided with openings or perforations 9 extending entirely therethru. In the arrangement of the type and spacer blocks, certain of the spacer blocks will be so disposed that the openings 8 therein will register with the openings 9 and thus throughout the area of the chase there will be provided a plurality of perforations or openings of a more or less irregular arrangement, whereby the elements 2 as a whole, will have a plurality of orifices therethru' such as will tend to prevent production of suction when moved toward the platen. V

The element 2 is preferably provided with an air chamber 10 having a screw threaded intake nipple 11, the air chamber covering the entire back of said element. A compressed air supply pipe 12 is connected by a suitable coupling 13 with the nipple 11 and conducts air to the chamber 10. A valve 14 of any suitable type may be mounted in the pipe 12 to control the air supply to the air chamber;

In the operation of the press,blasts or'jets of air from the openings 9 in the spacer blocks 4 will strike the paper 3 immediately after the type has printed upon the paper and as it moves away from the same. This willprevent any tendency of the paperof moving towards or being pickedup by the element 2 or from being dislodged from the It will be apparent from the foregoing,

that printing presses constructed in accord ance. with the present invention may be operated at high speeds without interruption such as is usually brought about due to the dislodging, jamming or deranging of the paper when the platen and chase carrying elements are moved rapidly towards and away from one another. a,

lVhile I prefer to prevent such derangement or dislodgment of the paper by directing compressed air upon the paper as herein before described and illustrated in the accompanying drawings,I may eliminate to a great extent th said dislodging and derang= ing of the said paper thru the use of a perforated chase carrying element with the perforations extending into and thru the type and type spacer blocks, the effect being the same as would be produced in the ordinary palmetto fan, were the same provided with a plurality of openings.

By using heater air, the heating being effected in some manner in the chamber or before delivery to said chamber, the ink freshly printed upon the paper will be more quickly dried by th jets of heater air issuing from the element 2. r

I claim:

1. The combination with a platen and chase carrying element onto the paper which has been printed, and the holding of the paper against removal, from the platen by the action of the chase carrying element, im-I mediately when said elements move awav from one another.

2. In a printing press the combination with a platen, of a chase carrying element with means for moving said elements towards and away from one another and means providing for the formation of openings or perforations extending thru the chase carry ing element and in close proximity to and between the type to be supported thereon, so 7 that said element, as a whole, is of a. perforate nature.

UTAKICHI KAIVASAKI. y 

